Padlock.



. Patented Nov. I9, 190i. w. R BALLOU. PADLOOK.

(Application filed Jan. 7, 1901.)

(No Model.)

INVENTOR 1 A Home WITNESSES UNITED STATES PATENT OFFICE.

WALDO R. BALLOU, OF STAMFORD, CONNECTICUT, ASSIGN OR TO THE YALE (l5TOWNE MANUFACTURING COMPANY, OF STAMFORD, CON- NECTICUT.

PADLOCK.

SPECIFICATION forming part of Letters Patent No. 686,882, dated November19, 1901.

Application filed January 7, 1901- Serial No. 42,412. (No model.)

To all whom it may concern.-

Be it known that I, IVALDO R. BALLOU, of Stamford, in the county ofFairfield and State of Connecticut, have invented certain new and usefulImprovements in Padlocks; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to an improvement in padlocks, the object of theinvention being to provide a device of this character which will besimple in construction and operation, easy and comparatively cheap tomanufacture, and strong and durable when in use.

With this object in view the invention consists in certain novelfeatures of construction and combinations and arrangements of parts, aswill be more fully hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a View in section,illustrating my improvements. Fig. 2 is an end view of the shackle andkey plug removed. Figs. 3 and 4 are views of modified forms of shacklesand keyplugs, and Fig. 5 is aview of a modified form of lock.

1 represents the lock-casing, provided at one side with a hole cored orbored through the same to receivethe straight key-plug 2, preferably ofbronze, which latter is provided with a keyhole 3, projecting nearlythrough the same transverselyand extending from end to end of the plug2. The plug is made with transverse holes for the accommodation ofpin-tumblers 4, of the ordinary construction, mounted in the casing 1,and the meeting ends of said pins are adapted to be alined with the edgeof the key-plug 2 by a key 5, inserted in the keyhole 3.

The plug 2 constitutes a leg for the shackle, and its upper end isprovided with a lug'8, which is forced intoa notch in the lower end ofthe shackle 6 and secured therein by a pin 7, driven through the shackleand into the lug, the lower end of the shackle being spaced slightlyfrom the upper end of the plug to form a groove or recess 8, into whichthe free end of a flat spring 9 projects. The spring 9 is secured in ahorizontal pocket or recess 10 in the casing 1 by a screw 11, screwedinto the casing in alinement with an opening in the top of the casing,over which a cap 13 is secured, and provided with a vertical sleeve 12,in which the upper end of the screw 11 is disposed to hold the cap inplace and form a keeper to receive a lug 14 on the free end of theshackle when the pin-tumblers lock the plug and shackle in place.

The spring 9 serves to normally hold the shackle in its locked positionand to return it to such position after it has been raised by the key,and the outer end of pin 7 is adapted to aline with a notch in thecasing when the shackle is in its locked position, but which when theshackle is raised and turned slightly by the key will rest on the top ofthe casing and prevent the return of the shackle by the spring 9 untilthe pin 7 is moved to aline with the notch, when the shackle will be inproper position to be forced into its keepenby the spring 9.

By constructing the plug and shackle separately and afterward securingthem together I am enabled to make the keyhole zigzag in cross-sectionor any other shape desired and am also enabled to use one metalas, forinstance, bronze-4 or the key-plug and another metal-as,for instance,steel-for the shackle,

thus greatly strengthening the lock and at the same time preventing anypossibility of rust interfering with the perfect operation thereof.

Instead of constructing the plug and shackle as above described I mightmake the same as shown in Fig. 3. tion the lower end of the shackle isprovided with a screw-threaded lug 15, adapted to be screwed into athreaded socket in the upper end of the plug and be secured in place bythe pin 16, forced through the plug and into 0 the lug 15, and afinishing or ornamental collar 17 is secured between the shackle andplug by being placed on the lug 15 before the latter is secured in theplug, or I might construct the same as shown in Fig. 4. form of myinvention the shackle and plug are secured together precisely like thatshown in Fig. 8; but the ornamental collar is dispensed with, andinstead the upper end of the plug is ornamented as shown at 18, or I tooIn this form of my inven- In this might construct my improvements asshown in Fig. 5. In this form of my invention a key-plug 22 is securedin a recess in the easing 1 beside the leg of the shackle by means of arivet or pin 23, and said stem and keyplug are made with alined' socketsfor pintumblers 24, which are operated by a key inserted in a keyhole 25in the plug 22 to aline the meeting ends thereof with the juncture ofthe key-plug and stem to permit the latter and shackle to be raisedslightly and turned to unlock the lock, and the spring 9 will return theshackle and stem to their locked position when turned to aline the pin 7With the notch in the casing.

Various other slight changes might be resorted to without departing frommy invention, and hence I would have it understood that I do not wish tolimit myself to the precise details set forth, but consider myself atliberty to make such slight changes and alterations as fairly fallWithin the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire'tosecure by Letters Patent, is

1. In apadlock, the combination with a casing and alongitndinally-movable shackle, of a separate key-plug mounted in thecasing and having an irregular key-slot extending from end to endthereof.

2. In a padlock, the combination witha casing, of a shackle and aseparate key-plug having a key-slot therein, said plug constituting oneleg of the shackle, means securing the shackle to the key-plug and meansfor securing the shackle to the casing.

3. In a lock, the combination with a casing, of a longitudinallymovableshackle, a leg rigidly and immovably secured to the shackle,pin-tumblers for locking the leg and shackle against movement and aspring in the casing for normally holding the shackle and leg inposition to be locked by the tumblers.

4. In a lock, the combination with a casing, of a longitudinally-movableshackle, a leg rigidly and immovably secured to the shackle and having agroove or recess therein, pintumblers for locking the shackle-legagainst end in said casing and having its free end disposed in thegroove or recess in the shackleleg and normally pressing the shackleagainst the keeper and adapted to return the shackle to its lockedposition.

5. In a padlock, the combination of a easing, a series of pin-tumblersin said casing and a shackle having a leg locked in the easing by saidpin-tumblers, the shackle being made of a separate piece of metal fromthe leg and rigidly and immovably secured thereto, said leg having anirregular key-slot extending from end to end.

6. In a lock, the combination with a casing and pin-tumblers therein, ofa longitudinallymovable key-plug in said casing to be locked' againstmovement by the pin-tumblers and having a keyhole therein, a lug on theend of said plug, a separate shackle having a notch in one end toreceive said lug and a pin passing through the shackle and into the lugand securing said shackle and plug rigidly together.

7. In a lock, the combination with a casing andlocking meanstherein,ofalongitudinallymovable metal key-plug in said casing to belocked against movement by the locking means and having an irregularkey-slot therein for the reception of a key to unlock said lockingmeans, and a shackle composed of a different metal than that of thekey-plug and rigidly secured thereto.

8. In a lock the combination with a casing and locking mechanismthereon, of a shackle adapted to be locked against movement by saidlocking means, a shackle-leg, one of said parts having a lug thereon,the other having a socket for the reception of the lug and a pin passedthrough the socketed member and into the lug, said pin securing the twoparts rigidly together.

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

WALDO R. BALLOU. Witnesses:

SGHUYLER MERRITT, W. S. ABEL.

